Sulfide - Nomenclature. 1  The systematic names sulfanediide and sulfide (2â), valid IUPAC names, are determined according to the substitutive and additive nomenclatures, respectively.
Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as Nuclear Weapon States by the Treaty on the Non-Proliferation of Nuclear Weapons, also known as the Nuclear Non-Proliferation Treaty or NPT.
Definition of nuclear for English Language Learners. : 1  of, relating to, producing, or using energy that is created when the nuclei of atoms are split apart or joined together. : 2  having or involving nuclear weapons. : 3  of or relating to the nucleus of an atom.